Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: regulator: core: fix NULL dereference on unbind due to stale coupling data Failing to reset coupling_desc.n_coupled after freeing coupled_rdevs can lead to NULL pointer dereference when regulators are accessed post-unbind. This can happen during runtime PM or other regulator operations that rely on coupling metadata. For example, on ridesx4, unbinding the 'reg-dummy' platform device triggers a panic in regulator_lock_recursive() due to stale coupling state. Ensure n_coupled is set to 0 to prevent access to invalid pointers.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d8ca7d184b33af7913c244900df77c6cad6a5590 before 7574892e259bbb16262ebfb4b65a2054a5e03a49; affected d8ca7d184b33af7913c244900df77c6cad6a5590 before 6c49eac796681e250e34156bafb643930310bd4a; affected d8ca7d184b33af7913c244900df77c6cad6a5590 before ca9bef9ba1a6be640c87bf802d2e9e696021576a; affected d8ca7d184b33af7913c244900df77c6cad6a5590 before 800a2cfb2df7f96b3fb48910fc595e0215f6b019; affected d8ca7d184b33af7913c244900df77c6cad6a5590 before 233d3c54c9620e95193923859ea1d0b0f5d748ca; affected d8ca7d184b33af7913c244900df77c6cad6a5590 before 5d4261dbb3335221fd9c6e69f909ba79ee6663a7; affected d8ca7d184b33af7913c244900df77c6cad6a5590 before d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8; affected d8ca7d184b33af7913c244900df77c6cad6a5590 before ca46946a482238b0cdea459fb82fc837fb36260e |
| Linux / Linux | affected 5.3; unaffected 0 before 5.3; unaffected 5.4.297 through 5.4.*; unaffected 5.10.241 through 5.10.*; unaffected 5.15.190 through 5.15.*; unaffected 6.1.148 through 6.1.*; unaffected 6.6.101 through 6.6.*; unaffected 6.12.41 through 6.12.*; unaffected 6.15.9 through 6.15.*; unaffected 6.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/7574892e259bbb16262ebfb4b65a2054a5e03a49
- https://git.kernel.org/stable/c/6c49eac796681e250e34156bafb643930310bd4a
- https://git.kernel.org/stable/c/ca9bef9ba1a6be640c87bf802d2e9e696021576a
- https://git.kernel.org/stable/c/800a2cfb2df7f96b3fb48910fc595e0215f6b019
- https://git.kernel.org/stable/c/233d3c54c9620e95193923859ea1d0b0f5d748ca
- https://git.kernel.org/stable/c/5d4261dbb3335221fd9c6e69f909ba79ee6663a7
- https://git.kernel.org/stable/c/d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8
- https://git.kernel.org/stable/c/ca46946a482238b0cdea459fb82fc837fb36260e
ADP enrichment
No English description supplied.